Ok guys so I have a 90 supra turbo 5 speed. It has ARP head studs HKS head gasket CT26 57Trim turbo. Greddy front mount with 3" hard piping. 3" exhaust, custom turbo elbow, Lexas AFM with intake, still running stock injectors and pump. After I opened up the turbo elbow it spools way faster but runs way leaner. I am running 12PSI right now and AFR's get up in the 14s when the revs get high. EGT's clime like crazy and would easily pass 2000 degrees if i dont lift. I am not driving it till i get the AFR's under control. I understand i need injectors. I just am wondering what you suggest. Right now i am just trying to run 14PSI. The car is an autocross car so can i run 550cc for now and do i need a fuel pump and regulator. Or what injectors can i run with the stock ecu? Thanks for all your help everyone.
Car running to lean under boost
- Thread starter boostedmklll
- Start date
boostedmklll;1813799 said:
This is where some of your problems lie...
The Lexus AFM is 25% larger allowing 25% more air then the stock AFM Hints why you need 25% larger injectors (550cc)....Or you will lean out and pop your motor
It's your car so do what you want but if you did put the Lexus AFM on then maybe do a little research first bud cause there's info on this all over the place.
Stop running your car so lean if you want to try and save it...
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the car came this way im just trying to get everything running correctly. what injectors would you recommend with my stock ecu and that are affordable. and do i need a pump as well?
You can normally find Evo 8/9 560cc injectors for around $250 for all 6.
540cc/550cc/560cc is the size you want to aim for with a Lexus AFM.
I would definitely Buy a upgraded pump.
if i was you i would be trying to get my hands on a Stock AFM while you are waiting to do your injector upgrade and fuel pump
540cc/550cc/560cc is the size you want to aim for with a Lexus AFM.
I would definitely Buy a upgraded pump.
if i was you i would be trying to get my hands on a Stock AFM while you are waiting to do your injector upgrade and fuel pump
boostedmklll;1813799 said:
boostedmklll thread title;1813799 said:
You have a large compressor. Much larger than the CT-26 compressor. You are lying to the ECU about the volume of air, and are not using the right injector.
What everyone is saying is.. don't boost, hell don't drive it until you get this fixed.
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